ASPIRE Fall 2012 - Aspire - The Concrete Bridge Magazine

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We make your brilliant ideas concrete. Making it real, that’s what it’s all about. We helped architect Thom Mayne’s designs for the Perot Museum come to life with reliable, consistent cementitious materials that created the focal point of this structure’s unique exterior, the custom textured precast panels. The Perot Museum of Nature & Science—Dallas, Texas opening early 2013 Our cements help support the project’s performance and sustainability requirements. Let’s talk about what you’re building next, because making it real starts with making it right. 888.646.5246 www.holcim.us Perfecting Progress
Segmental Concrete Solutions by Craig A. Shutt to erect the main and side spans, while the span-by-span approach was used for the approach spans. This helped speed the erection process and hasten delivery. Other techniques that helped speed delivery included creating bid documents that were significantly more detailed than usual. This allowed the contractor to work directly from the bid documents rather than create shop drawings, saving both time and money. The Victory Bridge in New Jersey was completed more than two months ahead of schedule. Photo: ©FIGG. Accelerated bridge construction (ABC) is often associated with short bridges or short-span bridges and moving fullspan components into place quickly. But ABC techniques also apply to longer-span structures, including segmental concrete bridges. These concepts aid in rapid design and construction of bridges, which save costs and minimize disruption to the travelling public. Here are four examples: Victory Bridge ABC techniques have been in development for some years, as can be seen in the Victory Bridge on State Route 35 across the Raritan River between Perth Amboy and Sayreville in New Jersey. The state’s first segmental box-girder bridge opened fully to traffic in September 2005—more than two months ahead of schedule. Even more impressive, the first of the twin structures opened to traffic just 15 months after the notice to proceed was received. The second bridge was completed nine months later, according to a report in the Spring 2006 issue of HPC Bridge Views. The bridge’s parallel structures feature main spans of 440 ft, a U.S. record for fully match-cast segments. Two side spans on each bridge are 330 ft, while the approach spans vary in length from 142 to 150 ft. The balanced-cantilever method was used The bid documents included details of reinforcement bends, segment geometry, and tendon-stressing sequences. They also included electronic files with integrated threedimensional color drawings for some of the elements. Using this method, the first segment was cast just six weeks after the notice to proceed was issued, getting the project off to a fast start that continued to completion. Earnest F. Lyons Bridge The span-by-span approach to segmental designs also can speed construction, as was shown by the Ernest F. Lyons Bridge in Stuart, Fla. The twin, two-lane bridges were completed eight months ahead of schedule. The 4600-ft-long, bridge features 30 spans at 152 ft plus a first span of 100 ft. Typical segments were 10 ft long, 10 ft deep, and 61 ft wide. A typical span consisted of 15, precast concrete segments, post-tensioned together using ten 19-strand tendons. The spans subsequently were made continuous into six-span units. Despite a permitting process that took two months longer than anticipated, construction was still completed ahead of schedule. Construction delays and some damage also resulted from Hurricanes Frances and Jeanne passing over the site. Three casting beds were set up to cast the 501 segments. Two beds cast typical segments, while the third was created to be interchangeable for pier segments and expansion-joint segments. The precaster used high-early strength concrete and transversely post-tensioned the top slab as soon as possible, allowing beds to be stripped every 12 hours. This ensured a new segment was cast each day in each form. ACCELERATED BRIDGE CONSTRUCTION The Earnest F. Lyons Bridge was completed within budget and eight months ahead of schedule. Photo: Jim Schneidermann, PCL. ASPIRE, Fall 2012 | 43
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Page 3 and 4: Photo: Alfred Benesch and Company.
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Page 7 and 8: DESIGN CONSTRUCTION ANALYSIS ASPIRE
Page 9 and 10: see the Summer 2012 issue of ASPIRE
Page 11 and 12: to accurately create the concrete e
Page 13 and 14: fib Approach The Model Code for Ser
Page 15 and 16: Precast concrete spliced U-girders
Page 17 and 18: 3½” 3’-7” 3’-7” 5” 2½
Page 19 and 20: Epoxy-Coated reinforcing Type 205 S
Page 21 and 22: the up-station and down-station dec
Page 23 and 24: eight deck segments of the viaduct
Page 25 and 26: earth (MSE) walls to minimize the e
Page 27 and 28: 1104_Helser_usa:Layout 1 21.06.2011
Page 29 and 30: After the concrete ribbon arch desi
Page 31 and 32: New Grouting Specification This spe
Page 33 and 34: Typical cross section, cast-in-plac
Page 35 and 36: AESTHETICS COMMENTARY by Frederick
Page 37 and 38: Looking north at the completed Blac
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Page 41 and 42: Precast segments were cast using th
Page 43: CREATE. ENHANCE. SUSTAIN. Second Pe
Page 47 and 48: The 120 segments in the main span o
Page 49 and 50: on detecting ASR in the field, conf
Page 51 and 52: Figure 5. Fifth Street Bridge over
Page 53 and 54: 2013 Call for Papers Abstracts due
Page 55 and 56: FREE On-Site Shotcrete Informationa
Page 57 and 58: Complete Solutions and Support for
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Page 61: www.holcim.us www.larsa4d.com www.m

ASPIRE Fall 2012 - Aspire - The Concrete Bridge Magazine

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